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Preparation method of nickel-manganese zinc ferrite material with high impedance and magnetic property

A manganese-zinc ferrite, high magnetic technology, applied in the manufacture of inductors/transformers/magnets, inorganic material magnetism, electrical components, etc., can solve the problems that manganese-zinc ferrite materials cannot achieve good application effects in medium and high frequencies , to enhance the mechanical properties, expand the scope of application, and improve the oxygen content distribution

Inactive Publication Date: 2019-05-14
NANTONG HUAXING MAGNETIC MATERIAL
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Problems solved by technology

[0007] Technical problem: The purpose of this invention is to solve the technical problem that manganese-zinc ferrite materials cannot achieve good application effects in medium and high frequencies, and propose a method for preparing nickel-manganese-zinc ferrite materials with high impedance and high magnetic properties

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  • Preparation method of nickel-manganese zinc ferrite material with high impedance and magnetic property

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preparation example Construction

[0025] A kind of preparation method of high impedance high magnetic performance nickel-manganese zinc ferrite material of the present invention comprises the following steps:

[0026] S1, will contain Ni 2+ , Zn 2+ , Mn 2+ , Fe 2+ The metal salt is made into a metal nitrate solution to obtain a mixed solution A, and then the alkali solution of graphene is added to the mixed solution A, and ethylenediaminetetraacetic acid and titanate coupling agent are added under magnetic stirring, and ammonia water is added dropwise Adjust the pH to 4-6, heat to 80-100°C, react for 1-2 hours, and let stand for 3-5 hours; filter, wash and dry to obtain the first material,

[0027] S2, after adding ferrocene magnetic powder, polyvinyl alcohol (PVA) and bisphenol A epoxy resin to the first material and mixing, ball milling to obtain the second material;

[0028] S3. After pressing the third material into shape, microwave sintering and cooling are performed to obtain a manganese zinc ferrite...

example 1

[0030] (1) According to the chemical formula NiMnZnFe 2 o 4 , the Mn(NO 3 ) 2 , Fe(NO 3 ) 3 .9H 2 O, Zn(NO 3 ) 2 .6H 2 O is made into a 0.2mol / L aqueous solution under strong stirring according to the chemical dosage ratio to obtain a mixed solution A;

[0031] (2) the preparation of the alkali solution of graphene, take a certain amount of graphene and NaOH solution to mix and ultrasonic vibration 30 minutes and be made into the alkali solution of graphene; The mass ratio of NaOH and graphene is 1: 1;

[0032] (3) At 25°C, add the alkali solution of graphene into the mixed solution A, add ethylenediaminetetraacetic acid and titanate coupling agent under magnetic stirring, and drop ammonia water to adjust the pH to 4-6, and the mixed solution The volume ratio of A to the alkali solution of graphene is 35:1; the sol is allowed to stand for 5 minutes to obtain a gel. The obtained gel was placed in a drying oven, and dried at 200° C. for about 1.5 h to obtain a block-sh...

example 2

[0037] (1) According to the chemical formula Ni-MnZnFe 2 o4 , the Ni(NO 3 ) 2 , Mn(NO 3 ) 2 , Fe(NO 3 ) 3 .9H 2 O, Zn(NO 3 ) 2 .6H 2 O is made into a 0.2mol / L aqueous solution under strong stirring according to the chemical dosage ratio to obtain a mixed solution A;

[0038] (2) the preparation of the alkali solution of graphene, take a certain amount of graphene and NaOH solution to mix and ultrasonic vibration 30 minutes and be made into the alkali solution of graphene; The mass ratio of NaOH and graphene is 2:1;

[0039] (3) At 25°C, add the alkali solution of graphene into the mixed solution A, add ethylenediaminetetraacetic acid and titanate coupling agent under magnetic stirring, and drop ammonia water to adjust the pH to 4-6, and the mixed solution The volume ratio of A to the alkali solution of graphene is 35:1; the sol is allowed to stand for 5 minutes to obtain a gel. The obtained gel was placed in a drying oven, and dried at 200° C. for about 1.5 h to obt...

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Abstract

The invention provides a preparation method of a nickel-manganese zinc ferrite material with a high impedance and magnetic property. The preparation method comprises the following steps: preparing a meta nitrate solution from metal salt containing Ni<2+>, Mn<2+> and Fe<2+> to obtain a mixed solution A, adding an alkali solution of graphene into the mixed solution A, adding ethylene diamine tetraacetic acid under magnetic stirring, adding ammonia water dropwise to adjust the pH value to 4 to 6, heating to 80 to 110 DEG C, reacting for 1 to 2 hours and standing for 3 to 5 hours; performing suction filtration, washing and drying to obtain a first material; adding a dicyclopentadienyl ferromagnetic powder, polyvinyl alcohol (PVA) and bisphenol A epoxy resin into the first material, mixing andball-milling to obtain a second material; and performing pressing formation on the second material, performing microwave sintering and cooling to obtain the nickel-manganese zinc ferrite material. According to the method and through the improvement of the process and the addition of the materials, low loss and high impedance within high-frequency range are realized and the application range of themanganese zinc ferrite material is enlarged.

Description

technical field [0001] The invention relates to the field of magnetic materials, in particular to a preparation method of a nickel-manganese zinc ferrite material with high impedance and high magnetic performance. Background technique [0002] Manganese zinc ferrite is a kind of soft magnetic ferrite, which belongs to spinel structure and is made of iron, manganese, zinc oxides and their salts by ceramic technology. It has a high initial permeability. It is generally used in the frequency range of 1 kHz to 10 MHz. It can make inductors, transformers, filter cores, magnetic heads and antenna rods. [0003] In recent years, foreign research on materials with high magnetic permeability and high Curie temperature has also gradually increased, which not only requires the material to have ultra-high magnetic permeability, but also has a higher Curie temperature. For the R15K MnZn ferrite material, the Curie temperature is generally only about 110°C. Such materials cannot meet ...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622H01F1/36H01F41/00
Inventor 杨美华
Owner NANTONG HUAXING MAGNETIC MATERIAL
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